[CH3:1][O:2][C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:11]=1[NH:10][C:9]([C:12]([OH:14])=[O:13])=[CH:8]2>C(O)C(C)C>[CH2:6]([O:13][C:12]([C:9]1[NH:10][C:11]2[C:7]([CH:8]=1)=[CH:6][CH:5]=[CH:4][C:3]=2[O:2][CH3:1])=[O:14])[CH:7]([CH3:11])[CH3:8]Under the conditions of Example 8(A), 8 g of 7-methoxyindole-2-carboxylic acid is converted into the acid chloride and the latter is reacted with isobutanol. After working up of the reaction product and recrystallization from petroleum ether, 6.2 g of 7-methoxyindole-2-carboxylic acid isobutyl ester is obtained, mp 100°-101° C.
불러오는 중…